Critical Study on Rotational Flow of a Fractional Oldroyd-B Fluid Induced by a Circular Cylinder

Figure 4

Profiles of the velocity 𝑤(𝑟,𝑡) and shear stress 𝜏(𝑟,𝑡) given by (3.16) and (3.23) for 𝑡=5 s, 𝑅=0.3, Ω=2, 𝜆=4, 𝜈=0.003, 𝜇=2.96, 𝛾=0.8, 𝛽=0.2, and different values of 𝜆_𝑟.

(a)

(b)